Lubricator



(No Model.) 3 Sheets-Sheet 1.

O. W. SHERBURNE.

LUBRIGATOR.

No. 498,944. Patented June 6, 1893.

(No Model.) 3 Sheets-Sheet 2.

O. W. SHERBURNE. LUBRIGATOR.

Patented June 6, 1893.

\A/ITNEEEEE UNITED STATES PATENT OFFICE.

. CHARLES IV. SHERBURNE, OF BOSTON, MASSACHUSETTS.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 498,944, dated June 6, 1893.

Application filed November 25 1892. Serial No. 452,988. (No model.)

To all whom it may concern:

Be it known that I, CHARLES W. SHER- BURNE, of Boston, inthe county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Iiubricators, of which the following, reference being had to the accompanying drawings, is a full, clear, and exact description, sufficient to enable others skilled in the art to make and use my invention without further invention on their part.

In the drawings,-Figure l is a top plan of a lubricator containing my invention. Fig. 2 is a vertical section of such a lubricator on the line 2-2 of Fig. 1. Fig. 3 is an elevation which also shows in section the parts which lie upon the section line 3--3 of Fig. 1.

In locomotive lubricators of the sight feed type, there are often two or three sight feed glasses for each oil cup and condenser. W hen one of these glasses breaks, it is desirable to cutit out from the system, and at the same time to continue to feed oil to the part normally supplied through the sight feed'glass which has broken.

In almost all sight feed lubricators, the oil passage from the oil cup to the sight feed glass is controlled by a valve, and in these drawings the bottom of the lubricator is not represented and the valve which controls the passage of oil to the sight feed glass is there fore not represented except in plan Fig. 1. It is also not unusual to have a valve at the top of the sight feed glass by which the cavity of the sight feed glass may be cutoff from the oil pipe into which it delivers."

This invention relates to a construction of lubricator designed to feed oil under pressure from the oil reservoir into or through the oil pipes leading from the sight feed to the engine.

In Fig. 1, A is the induction steam pipe, and a is the coupling nut for the induction steam pipe. Immediately below this induction steam pipe, is the condenser 13, which furnishes water for flooding the oil out of the oil cup part of the lubricator.

drawing of Fig. 2. The upper. part of the and best understood from Fig. 2, in which D This oil cup part of the lubricator is lettered O in the 6, if there were a channel formed to cl or if the pipe 6 communicated with both canals d (1 would be the same in substance.

E is a sight feed glass which leads to one or the other of the steam cylinders, or to the air-brake cylinder. This sight feed glass is mounted in the usual Way, in a fixture F, in

which fixture, as shown on the left hand side of Fig. 2 in section, is a channel d connectin g with the channel cl and also with the channel d which leads toward the steam cylinder. Directly over the sight feed glass in this fixture F is a valve f for which valve a valve seat is provided in the fixture, It is obvious that if the valve f is screwed down to its seat the connection between the sight feed glass and the channel d d would be cut off. When the sight feed glass is broken, the valve at the bottom and at the top of the sight feed glass may be shut off and the cylinder to which it feeds run without lubrication from the oil cup proper. This is common, hutundesirable.

Oilers have been made with a hand oil cup as it is called combined with the sight feed lubricator which will oil thecylinder on the side when the glass is broken if properly handled, when steam is shut off from the engine and from the lubricator. Besides this an oil feed under pressure through a channel which passed by the sight feed glass has been managed by means of a two Way cock. This last contrivance however has not been popular because the two way cock is a difficult thing to work easily or keep in order in an instrument which is not kept at a uniform temperature. This invention furnishes a good way of feeding oil under pressure from the same oil reservoir without the sight feed glass as well aswith it. It is at the will of the engineer either a sight feed, or blind-feed hydrostatic lubricator and employs compression valves, and not curious plug cooks for that purpose. It is important in locomotive lubricators that this channel 07/ 01 should connect with a source of steam supply under pressure and also with a source of oil supply forced forward by the hydraulic column. This will be the case when the valvefis lifted and the sight feed glass is in working order and in communication with the channel d 01 but if the sight feed glass is broken and it is necessary to close the valve f then there will pass through the channel d d nothing but steam derived from the condenser through the steam pipe 6.

I have lettered the handle of the valve f of Fig. 2 as f in Fig. l. I have lettered the two oil pipes leading to the steam cylinder as (1 and I have also lettered the oil pipe leading to the Westinghouse brake as d. The shut ofi valve at the lower end of the sight feed is shown in plan in Fig. 1 as G.

I have already described the manner in which the sight feed glass and the connection through it can be shut off from the pipe 61' d I now proceed to describe a means by which the oil from the cavity of the oil cup 0 can be introduced into this channel (1' d from the oil cup when the sight feed glass is shut off. H, Figs. 2 and 1,a.re two valves set into the thickened upper part of the oil cup part of the lubricator, and the stems of these valves pass entirely across the channels at formed in the head of the oil cup and com- .municating from the steam channels e. to the steam and oil channel 01 but do not block: these channels. These. valves are formed as an annular frustum of a cone in their seating part as shown in Fig. 3 at h, and from this frustuin of a cone extends centrally a hollow cylinder h which goes entirely through they interior wall 9 of the steam channel d, and enters the oil cavity of the oil cup. 0. A small hole h is pierced in the side of this hollow cylinder near the inclined part of the seat of this valve. H is the filling plug. The area of this hole k is not much greater than the transverse area of an ordinary pin, an inch and a half long pin but, small as it. is, it is in the form which allows oil to pass. through it in small quantities with great; readiness and with as little surface friction as possible. Where a -film of oil is to be. forced between the closely approaching surfaces of a valve and its seat, the cohesion between the walls and the oil renders the quantity of oil difficultof regulation; but if thequantity of oil is measured by the size of the cylindrical hole which is to be uncovered by a free opening of the conical partof the valve, the embarrassment arising from cohesion will not be so marked, and consequently,.the feeding of oil drop by drop as it is fed through the sight feed glass, will be more readily achieved by this form of valve than bya simple ordinary form of conical valve. One of these valves is provided for each of the cylinder connections and one for the air brake connection, or, if preferred, the cylinder connection may supply the air brake as well.

In the drawings, Fig. 1, the sight feed glass 1 the size of the pinhole port h pressure will afiiect its delivery but little. Al- I though I consider this form of valve a very superior form, yet I do not confine myself to 1 it as a compression valve without. the central hollow cylindrical extension will serve ausefor the air brake, is represented as combined with the air brake oil pipe and with one of the cylinder connections. In Fig. 2 it is shown on the left of the figure as separately connected.

I of Fig. 1 is the valve controlling the water delivery fromthe condenser andt' of Fig. 2 is the water pipe leading to the bottom of the oil cup. The relation of this valve I and Water pipe '5 is the same in this form of lubricator as in the form heretofore in use.

This improvement although originally designed for locomotive lubricators with more than one sight feed glass, is equally applicable for lubricators with a single sight feed glass. The ordinary lubricator consists of I a condenser, an oil cup, a water pipe lead-' ing from, the condenser to the oil cup, a

sight feed glass, a valve controlled passage from the top of the oil cup to the oil receiving end of the sight feed glass, a valve controlled passage from the oil delivery end of the sight feed glass to the oil pipe, and an oil pipe. Locomotivelubricators frequently have the pipe 6. shown in the drawings of this application, but its presence or absence does not affect the action or use of valve H or of valve f. If the passage d were plugged at 1 top and the valve 11 were inserted as in this application, it, is obvious that the double pathway for oil from the oil cup to the oil pipe would be present, and could be used. It also consists in the form of. valve which hasa conical seat; and hollow cylinder projecting from the center of the conical seat and a pin-hole 3 through said cylinder at or near the junction of the conical seat with the side. of the cylinder. This valve has therefore a compression 1 annulus, and a sliding center, and its maximum efficiency is measured almost, wholly by Variations of ful purpose, and even a slide valve with ports f could be made to serve. I prefer however the style of valve shown for the reasons already given.

I am aware that a patent was granted to Samuel Reid for a lubricator, No. 294,151, of

February 26, 1884, in which is shown an oil nozzle, which furnishes oil to a sight-feed glass, in which sight-feed glass air is compressed by means of an air-pump, forming part of the apparatus. This nozzle of Reids is formed on the end of a valve stem and has a small lateral perforation leading into it for the passage of oil. The oil is described as entering this perforation and flowing through I the axial cavity of the-nozzle. The horizontal opening into the nozzle is shown as. of the same size as theaxial cavity of the nozzle itself.

This differs in the following respects from the r invention herein described: In the first place, the valve H of this application does not carry a nozzle upon its end through which the oil is fed, but it does carry a hollow cylindrical projection below the annular valve seat, which hollow cylindrical projection is marked in the drawings Fig. 3, h. This hollow cylindrical projection is shown as passing entirely through the interior wall of the steam channel cl, which interior wall is marked on the drawings Fig. 2 as g. The pin-hole communication from the interior of this sliding cylinder to the cavity of the channel 01 is marked h The distinction between this contrivance and that which is shown in the Reid patent is that the hollow cylinder of this application has a diameter very many times the diameter of the pin-hole port through the upper port of its side, while the nozzle of the Reid device has a bore of the same size as the port through the side of the nozzle. In addition to that the oil is throttled or wiredrawn in this device only by the size of the port. In the Reid device it is throttled or wire-drawn by the walls of the port and the walls of the nozzle as well. Consequently the present device does not depend for its regulatingfeaturcs on a constant and long continuous friction on the oil, but on a short friction which is practically reduced toafriction corresponding to the opening of. port in consequence of the great bulk of oilthat there is in the hollow of the cylindrical port of the valve. 1 do not desire to claim anything which is shown or described in the patent to Reid.

I claim as my invention and desire to secure by Letters Patent- -1. In a lubricator, the combination of the channel cl d d above the sight feed glass and the sight feed glass and shut off valve at the top of the sight feed glass, with the partition 9 between the said channel, and the oil reservoir proper, which partition g is pierced from side to side and provided with the valve H adapted to said orifice in the partition g,substantially as and for the purpose described.

2. In a hydrostatic lubricator the combination substantially as described of an oil cup a sight feed glass connected with said oil cup, an oil channel d cl 02 leading to the oil delivery pipe and adapted to be opened to the oil space of the oil cup and to the interior of the sight feed glass or to be shut off from either or both of said sources of oil supply;

a valve which controls the opening between said oil channel and said oil cup, another valve which controls the opening between said oil channel and said interior of the sight feed glass, and another valve between said oil cup and said sight feed glass, all to operate substantially as described.

3. In a hydrostatic lubricator the combination of the steam space of the condenser with the steam and oil passage e d d d and of the said steam and oil passage with the oil space of the oil cup by two independent oil passages, each controlled by a valve, one of which passages opens directly from the channel d to the interior of the body of the lubricator O, and is controlled by the valve H, and the other of which passages opens from the oil pipe d to the sight-feed glass, and is controlled by the valve f, all substantially as and for the purposes described. CHARLES IV. SHERBURNE.

In presence of;

J. M.' DOLAN, F. F. RAYMOND, 2d. 

